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Mass Conservation in Modeling Moisture Diffusion in Multi-Layer Carbon Composite Structures (2009)

Youngquist, Robert C. ; Starr, Stanley O. ; Nurge, Mark A.

In: CASI

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Publication Date: 2019-07-12

Description: Moisture diffusion in multi-layer carbon composite structures is difficult to model using finite difference methods due to the discontinuity in concentrations between adjacent layers of differing materials. Applying a mass conserving approach at these boundaries proved to be effective at accurately predicting moisture uptake for a sample exposed to a fixed temperature and relative humidity. Details of the model developed are presented and compared with actual moisture uptake data gathered over 130 days from a graphite epoxy composite sandwich coupon with a Rohacell foam core.

Keywords: Composite Materials

Type: KSC-2009-005

Format: application/pdf

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